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InkdropApplication

CVE-2021-20745

HIGH · 7.8 CVSS v3.1 Published 2021-06-28
Fix available
A fix is available. Upgrade to 5.3.1 or later.
See remediation →
81/100
Remediation priority · High
No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Inkdrop versions prior to v5.3.1 contain a command injection vulnerability where loading a file or code snippet containing a specially crafted invalid iframe triggers arbitrary OS command execution on the system where Inkdrop runs.

MitigationUpgrade Inkdrop to version v5.3.1 or later to remediate this vulnerability.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
InkdropApplication
Affected:< 5.3.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check if Inkdrop is installed
    Run command: inkdrop --version or which inkdrop (Linux/macOS) or check Program Files/Inkdrop (Windows)
    Affected if Inkdrop is not found on the system, then not affected by this CVE
  2. Determine installed Inkdrop version
    Run: inkdrop --version or inkdrop -v, or right-click the app > About Inkdrop to view version number
    Affected if Version shown is prior to 5.3.1 (for example 5.3.0, 5.2.x, etc.)
  3. Verify the iframe loading feature is accessible
    Inkdrop allows loading code snippets or files with HTML content. Check if you can import or paste content containing iframe tags into a note or file.
    Affected if User has ability to load external files or code snippets into Inkdrop, enabling the attack vector

You are affected if Inkdrop is installed with a version lower than 5.3.1 and you load or could load files/snippets containing the specially crafted invalid iframe code.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to 5.3.1 or later
Fixed in 5.3.1
Interim mitigation

Upgrade Inkdrop to version v5.3.1 or later to remediate this vulnerability.

Fix this in Inkdrop Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-20745 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data